I have read the articles on synchronizing, and I am still having trouble figuring out how to create a rule to add and/or update a due date on a linked card when a change is made on the original card. I have figured out how to move the due date by the same number of days, but that only works if the linked card has a due date to begin with. It doesn't help me add a date to a linked card when adding or editing a trigger card.
Any help would be appreciated!